| package com.android.launcher3; |
| |
| import static com.android.launcher3.util.SystemUiController.FLAG_DARK_NAV; |
| import static com.android.launcher3.util.SystemUiController.UI_STATE_ROOT_VIEW; |
| |
| import android.annotation.TargetApi; |
| import android.app.ActivityManager; |
| import android.content.Context; |
| import android.graphics.Canvas; |
| import android.graphics.Color; |
| import android.graphics.Paint; |
| import android.graphics.Rect; |
| import android.util.AttributeSet; |
| import android.view.View; |
| import android.view.ViewDebug; |
| |
| public class LauncherRootView extends InsettableFrameLayout { |
| |
| private final Launcher mLauncher; |
| |
| private final Paint mOpaquePaint; |
| |
| @ViewDebug.ExportedProperty(category = "launcher") |
| private final Rect mConsumedInsets = new Rect(); |
| |
| private View mAlignedView; |
| private WindowStateListener mWindowStateListener; |
| |
| public LauncherRootView(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| |
| mOpaquePaint = new Paint(Paint.ANTI_ALIAS_FLAG); |
| mOpaquePaint.setColor(Color.BLACK); |
| mOpaquePaint.setStyle(Paint.Style.FILL); |
| |
| mLauncher = Launcher.getLauncher(context); |
| } |
| |
| @Override |
| protected void onFinishInflate() { |
| if (getChildCount() > 0) { |
| // LauncherRootView contains only one child, which should be aligned |
| // based on the horizontal insets. |
| mAlignedView = getChildAt(0); |
| } |
| super.onFinishInflate(); |
| } |
| |
| @TargetApi(23) |
| @Override |
| protected boolean fitSystemWindows(Rect insets) { |
| mConsumedInsets.setEmpty(); |
| boolean drawInsetBar = false; |
| if (mLauncher.isInMultiWindowModeCompat() |
| && (insets.left > 0 || insets.right > 0 || insets.bottom > 0)) { |
| mConsumedInsets.left = insets.left; |
| mConsumedInsets.right = insets.right; |
| mConsumedInsets.bottom = insets.bottom; |
| insets = new Rect(0, insets.top, 0, 0); |
| drawInsetBar = true; |
| } else if ((insets.right > 0 || insets.left > 0) && |
| (!Utilities.ATLEAST_MARSHMALLOW || |
| getContext().getSystemService(ActivityManager.class).isLowRamDevice())) { |
| mConsumedInsets.left = insets.left; |
| mConsumedInsets.right = insets.right; |
| insets = new Rect(0, insets.top, 0, insets.bottom); |
| drawInsetBar = true; |
| } |
| |
| mLauncher.getSystemUiController().updateUiState( |
| UI_STATE_ROOT_VIEW, drawInsetBar ? FLAG_DARK_NAV : 0); |
| |
| // Update device profile before notifying th children. |
| mLauncher.getDeviceProfile().updateInsets(insets); |
| boolean resetState = !insets.equals(mInsets); |
| setInsets(insets); |
| |
| if (mAlignedView != null) { |
| // Apply margins on aligned view to handle consumed insets. |
| MarginLayoutParams lp = (MarginLayoutParams) mAlignedView.getLayoutParams(); |
| if (lp.leftMargin != mConsumedInsets.left || lp.rightMargin != mConsumedInsets.right || |
| lp.bottomMargin != mConsumedInsets.bottom) { |
| lp.leftMargin = mConsumedInsets.left; |
| lp.rightMargin = mConsumedInsets.right; |
| lp.topMargin = mConsumedInsets.top; |
| lp.bottomMargin = mConsumedInsets.bottom; |
| mAlignedView.setLayoutParams(lp); |
| } |
| } |
| if (resetState) { |
| mLauncher.getStateManager().reapplyState(true /* cancelCurrentAnimation */); |
| } |
| |
| return true; // I'll take it from here |
| } |
| |
| @Override |
| public void setInsets(Rect insets) { |
| // If the insets haven't changed, this is a no-op. Avoid unnecessary layout caused by |
| // modifying child layout params. |
| if (!insets.equals(mInsets)) { |
| super.setInsets(insets); |
| } |
| } |
| |
| public void dispatchInsets() { |
| mLauncher.getDeviceProfile().updateInsets(mInsets); |
| super.setInsets(mInsets); |
| } |
| |
| @Override |
| protected void dispatchDraw(Canvas canvas) { |
| super.dispatchDraw(canvas); |
| |
| // If the right inset is opaque, draw a black rectangle to ensure that is stays opaque. |
| if (mConsumedInsets.right > 0) { |
| int width = getWidth(); |
| canvas.drawRect(width - mConsumedInsets.right, 0, width, getHeight(), mOpaquePaint); |
| } |
| if (mConsumedInsets.left > 0) { |
| canvas.drawRect(0, 0, mConsumedInsets.left, getHeight(), mOpaquePaint); |
| } |
| if (mConsumedInsets.bottom > 0) { |
| int height = getHeight(); |
| canvas.drawRect(0, height - mConsumedInsets.bottom, getWidth(), height, mOpaquePaint); |
| } |
| } |
| |
| public void setWindowStateListener(WindowStateListener listener) { |
| mWindowStateListener = listener; |
| } |
| |
| @Override |
| public void onWindowFocusChanged(boolean hasWindowFocus) { |
| super.onWindowFocusChanged(hasWindowFocus); |
| if (mWindowStateListener != null) { |
| mWindowStateListener.onWindowFocusChanged(hasWindowFocus); |
| } |
| } |
| |
| @Override |
| protected void onWindowVisibilityChanged(int visibility) { |
| super.onWindowVisibilityChanged(visibility); |
| if (mWindowStateListener != null) { |
| mWindowStateListener.onWindowVisibilityChanged(visibility); |
| } |
| } |
| |
| public interface WindowStateListener { |
| |
| void onWindowFocusChanged(boolean hasFocus); |
| |
| void onWindowVisibilityChanged(int visibility); |
| } |
| } |